So nochemically Synt hesis of NiMo/Al۲O۳ -ZrO۲ Nanocatalyst with Hig h ZrO ۲-Conten t for Hydr odesulphurization of Thiophene

The d emand for lower sul phur content in fuels requires the synthesis of more active hydrodesulphuriz ation (HDS) catalysts [۱]. The c onventionally used Ni Mo catalysts aresupported onto Ȗ-Al۲O۳ and they are prepared by im pregnation method [۲]. At this w ork, a series of high-per ormance H DS nanocata lysts were p repared by supporting NiMoS on A l۲O۳-ZrO۲ ( ZrO۲: ۱۷, ۲۰, ۳۰ wt %) and HDS activity of the catalysts were evaluated. Mate rials and m ethods: Highl y dispersed NiMoS/Al۲ O۳-ZrO۲ (ZrO۲: ۱۷, ۲۰, ۳۰ wt %) nanocatalysts were prepared by the so nochemical decomposi tion of molybdenum hexacarbony l and nickel acetate in the presen ce of sulphur and Al۲O ۳-ZrO۲ support and characterized by XRD, F ESEM, FTI R and surface area analyzer BET. The HDS activity tests were perfo rmed in a stirred reactor at ۱۶۰°C and atmosp heric pressu re for ۲ h (۱ wt% thiop hene in decane as a model fuel).

کلیدواژه ها:

NiMo/Al۲O۳-ZrO۲ ، Sonosynth esis ، Nanocatalyst ، Hyd rodesulphur ization.